SpringBoot2.x搭建SSM项目

【本文 Demo】

https://github.com/qidasheng2012/springboot2.x_ssm

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【目录结构】

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【项目】

【init.sql】

执行初始化脚本

DROP TABLE IF EXISTS `user`;
CREATE TABLE `user`
(
  `id`   bigint(20) NOT NULL AUTO_INCREMENT COMMENT '主键',
  `name` varchar(20) COMMENT '姓名',
  `age`  int(3) COMMENT '年龄',
  PRIMARY KEY (`id`)
) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci;


INSERT INTO `USER`VALUES (1, '张三', 23);
INSERT INTO `USER`VALUES (2, '李四', 24);

【pom.xml】

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0modelVersion>
    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.2.0.RELEASEversion>
        <relativePath/> 
    parent>

    <groupId>com.springbootgroupId>
    <artifactId>springboot2.x_ssmartifactId>
    <version>1.0.0version>
    <description>Spring Boot2.x 搭建 SSM 项目description>

    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <java.version>1.8java.version>
    properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-thymeleafartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
            <scope>testscope>
        dependency>

        <dependency>
            <groupId>org.mybatis.spring.bootgroupId>
            <artifactId>mybatis-spring-boot-starterartifactId>
            <version>2.1.0version>
        dependency>
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <scope>runtimescope>
        dependency>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-devtoolsartifactId>
            <scope>runtimescope>
            <optional>trueoptional>
        dependency>
        
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-configuration-processorartifactId>
            <optional>trueoptional>
        dependency>
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <optional>trueoptional>
        dependency>
    dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.bootgroupId>
                <artifactId>spring-boot-maven-pluginartifactId>
            plugin>
        plugins>
    build>

project>

【application.yml】

#服务器配置
server:
  port: 8080


spring:
  #数据源
  datasource:
    url: jdbc:mysql://localhost:3306/ssm?serverTimezone=Asia/Shanghai&characterEncoding=utf8
    username: root
    password: 123456
  #视图层控制
  mvc:
    static-path-pattern: /static/**
    view:
      prefix: classpath:/templates/
      suffix: .html

#Mybatis扫描
mybatis:
  mapper-locations: classpath*:mapper/*.xml
  #起别名。可省略写mybatis的xml中的resultType的全路径
  type-aliases-package: com.springboot.ssm.domain

# 日志
logging:
  level:
    com.springboot.ssm.mapper: debug # 显示执行sql

【User】

package com.springboot.ssm.domain;

import lombok.Data;

@Data
public class User {
    // 主键id
    private Integer id;
    // 姓名
    private String name;
    // 年龄
    private Integer age;
}

【UserMapper】

package com.springboot.ssm.mapper;

import com.springboot.ssm.domain.User;

import java.util.List;

public interface UserMapper {
    // 查询所有学生信息
    List<User> getAll();
}

【UserMapper.xml】

<mapper namespace="com.springboot.ssm.mapper.UserMapper">

    <select id="getAll" resultType="User">
        SELECT 
        	id,name,age
        FROM user
    select>

mapper>

【UserService】

package com.springboot.ssm.service;

import com.springboot.ssm.domain.User;

import java.util.List;

public interface UserService {
    // 查询所有学生信息
    List<User> getAll();
}

【UserServiceImpl】

package com.springboot.ssm.service.impl;

import com.springboot.ssm.domain.User;
import com.springboot.ssm.mapper.UserMapper;
import com.springboot.ssm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public List<User> getAll() {
        return userMapper.getAll();
    }
}

【UserController】

package com.springboot.ssm.controller;

import com.springboot.ssm.domain.User;
import com.springboot.ssm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping("/toUserListPage")
    public String toUserListPage() {
        return "user/userList";
    }

    @RequestMapping("/getAll")
    @ResponseBody
    public List<User> getAll() {
        return userService.getAll();
    }

}

【userList.html】

<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <title>用户列表页title>
head>
<body>
<h1>用户列表h1>
body>
html>

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【测试】

1、访问 http://localhost:8080/user/getAll

2、访问 http://localhost:8080/user/toUserListPage